#!/usr/bin/env bash
#
# mkrewriter
# Morgan Deters <mdeters@cs.nyu.edu> for cvc5
# Copyright (c) 2010-2013  The cvc5 Project
#
# The purpose of this script is to create rewriter_tables.h from a template
# and a list of theory kinds.
#
# Invocation:
#
#   mkrewriter template-file theory-kind-files...
#
# Output is to standard out.
#

copyright=2010-2022

cat <<EOF
/******************************************************************************
 * This file is part of the cvc5 project.
 *
 * Copyright (c) $copyright by the authors listed in the file AUTHORS
 * in the top-level source directory and their institutional affiliations.
 * All rights reserved.  See the file COPYING in the top-level source
 * directory for licensing information.
 * ****************************************************************************
 *
 * This header file automatically generated by:
 *
 *     $0 $@
 *
 * for the cvc5 project.
 */

EOF

me=$(basename "$0")

template=$1; shift

rewriter_includes=

pre_rewrite_get_cache=
pre_rewrite_set_cache=

post_rewrite_get_cache=
post_rewrite_set_cache=

pre_rewrite_attribute_ids=
post_rewrite_attribute_ids=

seen_theory=false
seen_theory_builtin=false

function theory {
  # theory ID T header

  lineno=${BASH_LINENO[0]}

  if $seen_theory; then
    echo "$kf:$lineno: error: multiple theories defined in one file !?" >&2
    exit 1
  fi

  # this script doesn't care about the theory class information, but
  # makes does make sure it's there
  seen_theory=true
  if [ "$1" = THEORY_BUILTIN ]; then
    if $seen_theory_builtin; then
      echo "$kf:$lineno: error: \"builtin\" theory redefined" >&2
      exit 1
    fi
    seen_theory_builtin=true
  elif [ -z "$1" -o -z "$2" -o -z "$3" ]; then
    echo "$kf:$lineno: error: \"theory\" directive missing class or header argument" >&2
    exit 1
  elif ! expr "$2" : '\(::*\)' >/dev/null; then
    echo "$kf:$lineno: warning: theory class \`$2' isn't fully-qualified (e.g., ::cvc5::internal::theory::foo)" >&2
  elif ! expr "$2" : '\(::cvc5::internal::theory::*\)' >/dev/null; then
    echo "$kf:$lineno: warning: theory class not under ::cvc5::internal::theory namespace" >&2
  fi

  theory_id="$1"
}

function alternate {
  # alternate ID name T header

  lineno=${BASH_LINENO[0]}

  if $seen_theory; then
    echo "$kf:$lineno: error: multiple theories defined in one file !?" >&2
    exit 1
  fi

  seen_theory=true
  seen_endtheory=true
}

function properties {
  # properties prop*
  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function endtheory {
  # endtheory
  lineno=${BASH_LINENO[0]}
  check_theory_seen
  seen_endtheory=true
}

function enumerator {
  # enumerator KIND enumerator-class header
  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function typechecker {
  # typechecker header
  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function typerule {
  # typerule OPERATOR typechecking-class
  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function construle {
  # construle OPERATOR isconst-checking-class
  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function rewriter {
  # rewriter class header
  class="$1"
  header="$2"

  rewriter_includes="${rewriter_includes}#include \"$header\"
"
  pre_rewrite_attribute_ids="${pre_rewrite_attribute_ids} preids.push_back(expr::attr::AttributeManager::getAttributeId(RewriteAttibute<${theory_id}>::pre_rewrite()));
"
  post_rewrite_attribute_ids="${post_rewrite_attribute_ids} postids.push_back(expr::attr::AttributeManager::getAttributeId(RewriteAttibute<${theory_id}>::post_rewrite()));
"

  pre_rewrite_get_cache="${pre_rewrite_get_cache}    case ${theory_id}: return RewriteAttibute<${theory_id}>::getPreRewriteCache(node);
"
  pre_rewrite_set_cache="${pre_rewrite_set_cache}    case ${theory_id}: return RewriteAttibute<${theory_id}>::setPreRewriteCache(node, cache);
"

  post_rewrite_get_cache="${post_rewrite_get_cache}    case ${theory_id}: return RewriteAttibute<${theory_id}>::getPostRewriteCache(node);
"
  post_rewrite_set_cache="${post_rewrite_set_cache}    case ${theory_id}: return RewriteAttibute<${theory_id}>::setPostRewriteCache(node, cache);
"

  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function sort {
  # sort TYPE cardinality [well-founded ground-term header | not-well-founded] ["comment"]
  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function cardinality {
  # cardinality TYPE cardinality-computer [header]
  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function well-founded {
  # well-founded TYPE wellfoundedness-computer [header]
  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function variable {
  # variable K ["comment"]
  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function operator {
  # operator K #children ["comment"]
  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function parameterized {
  # parameterized K1 K2 #children ["comment"]
  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function constant {
  # constant K T Hasher header ["comment"]
  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function nullaryoperator {
  # nullaryoperator K ["comment"]
  lineno=${BASH_LINENO[0]}
  check_theory_seen
}

function check_theory_seen {
  if $seen_endtheory; then
    echo "$kf:$lineno: error: command after \"endtheory\" declaration (endtheory has to be last)" >&2
    exit 1
  fi
  if ! $seen_theory; then
    echo "$kf:$lineno: error: no \"theory\" declaration found (it has to be first)" >&2
    exit 1
  fi
}

function check_builtin_theory_seen {
  if ! $seen_theory_builtin; then
    echo "$me: warning: no declaration for the builtin theory found" >&2
  fi
}

while [ $# -gt 0 ]; do
  kf=$1
  seen_theory=false
  seen_endtheory=false
  b=$(basename $(dirname "$kf"))
  source "$kf"
  if ! $seen_theory; then
    echo "$kf: error: no theory content found in file!" >&2
    exit 1
  fi
  if ! $seen_endtheory; then
    echo "$kf:$lineno: error: no \"endtheory\" declaration found (it is required at the end)" >&2
    exit 1
  fi
  shift
done
check_builtin_theory_seen

## output

text=$(cat "$template")
for var in \
    rewriter_includes \
    pre_rewrite_get_cache \
    post_rewrite_get_cache \
    pre_rewrite_set_cache \
    post_rewrite_set_cache \
    pre_rewrite_attribute_ids \
    post_rewrite_attribute_ids \
    template \
    ; do
  eval text="\${text//\\\$\\{$var\\}/\${$var}}"
done
error=`expr "$text" : '.*\${\([^}]*\)}.*'`
if [ -n "$error" ]; then
  echo "$template:0: error: undefined replacement \${$error}" >&2
  exit 1
fi
echo "$text"
